The Kirby Company is a manufacturer of vacuum cleaners and home cleaning accessories, based in Cleveland, Ohio. It is a division of the The Scott Fetzer Company (also known as Scott & Fetzer) which in turn is part of Berkshire Hathaway. Dealers are located in over 70 countries throughout the world. Since the 1920s, Kirby's products have been sold only door-to-door using in-home demonstrations.

Berkshire does not disclose Kirby's sales numbers, but Gene Windfeldt, the CEO from 1988 to 1997, estimated the vacuum sales at $1.1 billion per year in 1999. About 70% of Kirby's vacuum sales are financed through distributors.

The Kirby Company is a member of the Direct Sales Association.

The first Kirby vacuums were designed by Jim Kirby (1885-1971) for George Scott and Carl Fetzer after World War I, although the Kirby name was not used on a vacuum cleaner until the 1930s. James Kirby invented the "vacuette" circa 1920.

The Vacuette Electric, introduced in 1925 with its removable floor nozzle and handle, became the forerunner of today's multi-attachment Kirby vacuum models. In 1935, the company introduced the Kirby Model C, the first product to carry Jim Kirby's name.